Machine for cutting sheet-staves



(No Model.)

J. A WATERMAN & J. W. CHAPMAN.

MACHINE FOR CUTTING SHEET STAVES.

No. 340,745. Patented Apr. Z7, 1886.

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JASPER A. \VATERMAN AND JAY V. CHAPMAN, OF READING, MICHIGAN.

MACHINE FOR CUTTING SH EET-STAVE S.

SFECIPICATION forming part of Letters Patent No. 340,745,dated April 27,1886.

Application filed October 15, 1855. Serial No. 179,951. (No model.)

To all whom it may concern.-

Be it known that we, JASPER A. VVATER- MAN and JAY W. CHAPMAN, ofReading, in the county of Hillsdale and State of l\Iichigan, haveinvented new and useful Improvements in Machines for CuttingSheet-Staves; and we do hereby declare that the following is a full,clear, and exact description thereof, reference being had to theaccompanying drawings, which form a part of this specification.

This invention relates to certain new and useful improvements in meansfor cutting continuous barrel-staves with a bilge, and with the crozesand chines formed on such continuous staves.

The invention has for its object the forming of a barrel from one staveof sufiicient width to form the body of the barrel, such body being madeof a continuous roll or sheet of wood cut from a log, and havingthe'proper and uniform bilge given to it in the cutting of the log, andhaving the crozes and chines formed by the same cutters or knives whichcut the stave or roll upon the inner faces thereof.

In formerfi5atents-to wit, No. 182, 499, dated September 19, 1876, andNo. 210,171, dated November 19, 187 8-the said Jasper A. Watermanprovided means for forming a continuous sheet-stave with a bilge,employing a rigid curved knife or cutter for that purpose. Such knife,however, as the size or circumference of the log decreases with eachsucceeding revolution, cuts the bilge of constantly and successivelyvarying pitch, so that when the barrels are made up from such sheet theyvary in circumference at bilge and chine in the same proportion as thelog from which the sheet is cut in successive revolutions. while by theemployment of the present invention the barrels when made up are ofuniform size.

The invention consists, primarily, in the peculiar construction andoperation of a curved cutter or knife adapted to decrease its amount ofcurvature, as in operation, in cutting the sheet from the periphery of alog, the circumference of the log is diminished; secondarily, in soforming a cutter or knife adapted to cut a continuous stave or bilgedsheet from a log that the same knife or cutter will form the necessarycrozes and chines on the inner faces of such stave or sheet; thirdly, in

combination with such adjustable curved knife, a pair of guide orpressure rods so arranged as to conform at all times to the varyingcurvature of the knife or cutter, and carrying upon their outer endsrotating cutters,

which will cut the stave or sheet off at the end of the chine at eachend of such continuous stave; and, fourthly, in the peculiarconstruction of the various parts and their combination, as more fullyhereinafter described and claimed.

Figure l is a perspective view of our improvement as adapted to run onvertical slides above a log which is rotated by any of the known ordesired means. Fig. 2 is a plan with the top part of the cross-headwhich carries the pressure-rollers and rotatingcutters removed. Fig.3 isa detached plan view of the top part of the cross-head which carries thepressure-rollers removed. Fig. 4 is a detached plan of that part of therigid crosshead to which the top part which carries the pressure-rollersis adjustably secured.

In the accompanying drawings, A represents a cross-head adapted to workwith a reciprocating motion upon or between vertical guides B. Thiscross -head is composed of several parts, to wit:

0 is a bottom and rigid curved connection between the two slides D. Toeach of the inner ends of these slides there are pivot-ally secured theplates E, the inner ends of which are hinged together, and one of themis provided with a slot, 0, which engages with a pin, 1), projectingupward from the slide F, to the rear end of which is pivotally securedthe lever G, fulcrumed upon the ear 0, which pro jects from the rigidconnection 0, the outer end of this lever being pivotally connected toone end of a pitman, H, while the other end is pivotally connected toone of the guides B.

I is the knife or cutter, made in two pieces, as shown in Figs. 1 and 2,one of such parts being secured to the front of one of the plates E, andthe other to the front of the corresponding plate E, and the partsforming the knife hinged together at the center, as shown in the twofigures. The cutting-edges of these knives are slightly curved from thecenter to the end, in order to give the necessary curvature to the sheetor stave from the center to the ends, and near the ends of each of theparts of the knife there is formed a croze-cutter, d, and

IOL

a chine-cutter, e, so formed that the knife in its act of cutting thecontinuous stave from the r0- tating log will also form the necessarycrozes and chines. These parts are so arranged that (as will be seen byreference to Fig. 2) as the log A revolves with each succeedingrevolution the circumference of the log is diminished, and through theaction of the levers and slide, as described, the curvature of the knifebecomes less in the same ratio or proportion as the log diminishes, sothat the bilge, when the continuous stave is cut into proper lengths andformed into a barrel, is alike in all the barrels.

Secured to the slides D are the overhanging plates J, to the inner endsof which there is secured a rigid connection, K, curved on its frontline, and above this rigid connection the outer ends of the two plates Lare pivotally secured to the overhang of the plate J, while the innerends of these plates L are secured together bya hinge, M, and one orboth of the inner ends of these plates L are pivotally secured to aslide, N, which reciprocates between the plates L and the rigidconnection K, and this car is pivotally connected with the lever O,fulcrumed at P, with its other end pivotally connected with the pitmanQ, the

other end of which is pivotally connected to the frame or one of theslides B, these parts being so arranged that the operation of the platesL is precisely the same as is the operation of those, hereinbeforedescribed, which carry the cutter.

In the lower front face of each of the plates L there is suitablyjournaled a pressure-roll, R, which are not straight, but the peripherybetween the two ends is slightly concave, to correspond to the convexsurface cut by the knife, and at the outer ends of each of these twopressure-rolls, and upon such rolls, are journaled the rotating cuttersS, such cutters being so arranged as to cutoff the sides of the sheet,or, as they may be termed, the ends of the continuous stave at the endof each of the chines. It will be noticed that this portion of thecrosshead, carrying the pressure-roll, is compelled to follow the motionof the knife in its different curvatures as it diminishes thecircumference of the log.

WVhat we claim as our invention is 1. In a machine for cutting acontinuous stave with a bilge from the circumference of a rotating log,a cross-head and suitable supports therefor, combined with a curvedknife formed of two equal parts hinged together at their adjoining ends,while their outer ends are pivotally connected to the sides of saidcross-head, substantially as and for the purposes described.

2. In a machine for the purposes described, and in combination with acurved cutter made in two parts hinged together, the means,substantially as hereinbefore described, for gradually lessening thecurvatures of said knife in the same ratio as the circumference of thelog which is being acted upon by said knife diminishes, for the purposespecified.

3. In a machine for the purposes described, and in combination with acurved cutter made in tWoparts hinged together, a pair of concave facedpressure-rolls, adjustable to and from the face of the cutters, andmeans, substantially as described, for compelling said rolls to ad aptthemselves to the varying curvature of the cutter, substantially as setforth.

4. In a machine for stave-cutting purposes,

a cross-head and a cutter carried thereby, having formed integraltherewith croze and chine cutters, substantially as specified. 5. In amachine for the purposes described, and in combination with thepressure-rolls and cutters I thereof, rotating cutters journaled uponthe outer ends of such rolls, substan-' tially as and for the purposeset forth.

6. In a machine for the purposes described, the combination of thefollowing elements: a cross-head carrying a curved cutter made in twoparts, and mechanism for varying the curvatures of such knife, twopressure-rolls with concave surfaces and carrying upon their outer endsrotating cutters, and the mechanism described for compelling the rollsto conform to the varying curvature of the knife, the parts beingconstructed, arranged, and operating substantially as and for thepurpose specified.

JASPER A. WATERMAN. JAY w. CHAPMAN.

\Vitnesses:

H. S. SPRAGUE, E. ScULLY.

